<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>动画1</title>
    <link rel="stylesheet" href="../css/flex.css"/>
    <link rel="stylesheet" href="../css/asd.css"/>
</head>

<body>

<div flex="main:justify" class="f">
<div class="a"></div>
<div class="b"></div>
<div class="c"></div>
</div>

</body>
</html>